Quality diaphragm from Holley. These Holley check valve kits for the Holley 12-803 and 12-804 fuel pressure regulators. Holley Fuel Pressure Regulator Rebuild Kit. Fits Models Holley 12-803 and 12-804 fuel pressure regulators.
New Holley VACUUM DIAPHRAGM / 9-206 / 75-76 BUICK, 75-77 OLDS, 75-77 PONTIAC
New Holley VACUUM DIAPHRAGM / 9-107 / 70-72 OLDS
New Holley VACUUM DIAPHRAGM / 9-158 / 71-72 CHEVY
New Holley CHOKE DIAPHRAGM / 9-198 / 73-84 CHRYSLER, 71-83 DODGE, 74 FORD
New Holley VACUUM DIAPHRAGM / 9-165 / 75-79 CHRYSLER, 75-79 DODGE
New Holley VACUUM DIAPHRAGM / 9-113 / 71 CADILLAC
